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8b39fe56 MK |
1 | /* Target-dependent code for UltraSPARC. |
2 | ||
0fd88904 | 3 | Copyright 2003, 2004, 2005 Free Software Foundation, Inc. |
8b39fe56 MK |
4 | |
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, | |
20 | Boston, MA 02111-1307, USA. */ | |
21 | ||
22 | #include "defs.h" | |
23 | #include "arch-utils.h" | |
24 | #include "floatformat.h" | |
25 | #include "frame.h" | |
26 | #include "frame-base.h" | |
27 | #include "frame-unwind.h" | |
28 | #include "gdbcore.h" | |
29 | #include "gdbtypes.h" | |
386c036b MK |
30 | #include "inferior.h" |
31 | #include "symtab.h" | |
32 | #include "objfiles.h" | |
8b39fe56 MK |
33 | #include "osabi.h" |
34 | #include "regcache.h" | |
35 | #include "target.h" | |
36 | #include "value.h" | |
37 | ||
38 | #include "gdb_assert.h" | |
39 | #include "gdb_string.h" | |
40 | ||
41 | #include "sparc64-tdep.h" | |
42 | ||
43 | /* This file implements the The SPARC 64-bit ABI as defined by the | |
44 | section "Low-Level System Information" of the SPARC Compliance | |
45 | Definition (SCD) 2.4.1, which is the 64-bit System V psABI for | |
46 | SPARC. */ | |
47 | ||
48 | /* Please use the sparc32_-prefix for 32-bit specific code, the | |
49 | sparc64_-prefix for 64-bit specific code and the sparc_-prefix for | |
50 | code can handle both. */ | |
8b39fe56 MK |
51 | \f |
52 | /* The functions on this page are intended to be used to classify | |
53 | function arguments. */ | |
54 | ||
8b39fe56 MK |
55 | /* Check whether TYPE is "Integral or Pointer". */ |
56 | ||
57 | static int | |
58 | sparc64_integral_or_pointer_p (const struct type *type) | |
59 | { | |
60 | switch (TYPE_CODE (type)) | |
61 | { | |
62 | case TYPE_CODE_INT: | |
63 | case TYPE_CODE_BOOL: | |
64 | case TYPE_CODE_CHAR: | |
65 | case TYPE_CODE_ENUM: | |
66 | case TYPE_CODE_RANGE: | |
67 | { | |
68 | int len = TYPE_LENGTH (type); | |
69 | gdb_assert (len == 1 || len == 2 || len == 4 || len == 8); | |
70 | } | |
71 | return 1; | |
72 | case TYPE_CODE_PTR: | |
73 | case TYPE_CODE_REF: | |
74 | { | |
75 | int len = TYPE_LENGTH (type); | |
76 | gdb_assert (len == 8); | |
77 | } | |
78 | return 1; | |
79 | default: | |
80 | break; | |
81 | } | |
82 | ||
83 | return 0; | |
84 | } | |
85 | ||
86 | /* Check whether TYPE is "Floating". */ | |
87 | ||
88 | static int | |
89 | sparc64_floating_p (const struct type *type) | |
90 | { | |
91 | switch (TYPE_CODE (type)) | |
92 | { | |
93 | case TYPE_CODE_FLT: | |
94 | { | |
95 | int len = TYPE_LENGTH (type); | |
96 | gdb_assert (len == 4 || len == 8 || len == 16); | |
97 | } | |
98 | return 1; | |
99 | default: | |
100 | break; | |
101 | } | |
102 | ||
103 | return 0; | |
104 | } | |
105 | ||
106 | /* Check whether TYPE is "Structure or Union". */ | |
107 | ||
108 | static int | |
109 | sparc64_structure_or_union_p (const struct type *type) | |
110 | { | |
111 | switch (TYPE_CODE (type)) | |
112 | { | |
113 | case TYPE_CODE_STRUCT: | |
114 | case TYPE_CODE_UNION: | |
115 | return 1; | |
116 | default: | |
117 | break; | |
118 | } | |
119 | ||
120 | return 0; | |
121 | } | |
122 | ||
8b39fe56 MK |
123 | /* Register information. */ |
124 | ||
125 | struct sparc64_register_info | |
126 | { | |
127 | char *name; | |
128 | struct type **type; | |
129 | }; | |
130 | ||
131 | static struct sparc64_register_info sparc64_register_info[] = | |
132 | { | |
133 | { "g0", &builtin_type_int64 }, | |
134 | { "g1", &builtin_type_int64 }, | |
135 | { "g2", &builtin_type_int64 }, | |
136 | { "g3", &builtin_type_int64 }, | |
137 | { "g4", &builtin_type_int64 }, | |
138 | { "g5", &builtin_type_int64 }, | |
139 | { "g6", &builtin_type_int64 }, | |
140 | { "g7", &builtin_type_int64 }, | |
141 | ||
142 | { "o0", &builtin_type_int64 }, | |
143 | { "o1", &builtin_type_int64 }, | |
144 | { "o2", &builtin_type_int64 }, | |
145 | { "o3", &builtin_type_int64 }, | |
146 | { "o4", &builtin_type_int64 }, | |
147 | { "o5", &builtin_type_int64 }, | |
148 | { "sp", &builtin_type_void_data_ptr }, | |
149 | { "o7", &builtin_type_int64 }, | |
150 | ||
151 | { "l0", &builtin_type_int64 }, | |
152 | { "l1", &builtin_type_int64 }, | |
153 | { "l2", &builtin_type_int64 }, | |
154 | { "l3", &builtin_type_int64 }, | |
155 | { "l4", &builtin_type_int64 }, | |
156 | { "l5", &builtin_type_int64 }, | |
157 | { "l6", &builtin_type_int64 }, | |
158 | { "l7", &builtin_type_int64 }, | |
159 | ||
160 | { "i0", &builtin_type_int64 }, | |
161 | { "i1", &builtin_type_int64 }, | |
162 | { "i2", &builtin_type_int64 }, | |
163 | { "i3", &builtin_type_int64 }, | |
164 | { "i4", &builtin_type_int64 }, | |
165 | { "i5", &builtin_type_int64 }, | |
166 | { "fp", &builtin_type_void_data_ptr }, | |
167 | { "i7", &builtin_type_int64 }, | |
168 | ||
169 | { "f0", &builtin_type_float }, | |
170 | { "f1", &builtin_type_float }, | |
171 | { "f2", &builtin_type_float }, | |
172 | { "f3", &builtin_type_float }, | |
173 | { "f4", &builtin_type_float }, | |
174 | { "f5", &builtin_type_float }, | |
175 | { "f6", &builtin_type_float }, | |
176 | { "f7", &builtin_type_float }, | |
177 | { "f8", &builtin_type_float }, | |
178 | { "f9", &builtin_type_float }, | |
179 | { "f10", &builtin_type_float }, | |
180 | { "f11", &builtin_type_float }, | |
181 | { "f12", &builtin_type_float }, | |
182 | { "f13", &builtin_type_float }, | |
183 | { "f14", &builtin_type_float }, | |
184 | { "f15", &builtin_type_float }, | |
185 | { "f16", &builtin_type_float }, | |
186 | { "f17", &builtin_type_float }, | |
187 | { "f18", &builtin_type_float }, | |
188 | { "f19", &builtin_type_float }, | |
189 | { "f20", &builtin_type_float }, | |
190 | { "f21", &builtin_type_float }, | |
191 | { "f22", &builtin_type_float }, | |
192 | { "f23", &builtin_type_float }, | |
193 | { "f24", &builtin_type_float }, | |
194 | { "f25", &builtin_type_float }, | |
195 | { "f26", &builtin_type_float }, | |
196 | { "f27", &builtin_type_float }, | |
197 | { "f28", &builtin_type_float }, | |
198 | { "f29", &builtin_type_float }, | |
199 | { "f30", &builtin_type_float }, | |
200 | { "f31", &builtin_type_float }, | |
201 | { "f32", &builtin_type_double }, | |
202 | { "f34", &builtin_type_double }, | |
203 | { "f36", &builtin_type_double }, | |
204 | { "f38", &builtin_type_double }, | |
205 | { "f40", &builtin_type_double }, | |
206 | { "f42", &builtin_type_double }, | |
207 | { "f44", &builtin_type_double }, | |
208 | { "f46", &builtin_type_double }, | |
209 | { "f48", &builtin_type_double }, | |
210 | { "f50", &builtin_type_double }, | |
211 | { "f52", &builtin_type_double }, | |
212 | { "f54", &builtin_type_double }, | |
213 | { "f56", &builtin_type_double }, | |
214 | { "f58", &builtin_type_double }, | |
215 | { "f60", &builtin_type_double }, | |
216 | { "f62", &builtin_type_double }, | |
217 | ||
218 | { "pc", &builtin_type_void_func_ptr }, | |
219 | { "npc", &builtin_type_void_func_ptr }, | |
220 | ||
221 | /* This raw register contains the contents of %cwp, %pstate, %asi | |
222 | and %ccr as laid out in a %tstate register. */ | |
3567a8ea MK |
223 | /* FIXME: Give it a name until we start using register groups. */ |
224 | { "state", &builtin_type_int64 }, | |
8b39fe56 MK |
225 | |
226 | { "fsr", &builtin_type_int64 }, | |
227 | { "fprs", &builtin_type_int64 }, | |
228 | ||
229 | /* "Although Y is a 64-bit register, its high-order 32 bits are | |
230 | reserved and always read as 0." */ | |
231 | { "y", &builtin_type_int64 } | |
232 | }; | |
233 | ||
234 | /* Total number of registers. */ | |
386c036b | 235 | #define SPARC64_NUM_REGS ARRAY_SIZE (sparc64_register_info) |
8b39fe56 MK |
236 | |
237 | /* We provide the aliases %d0..%d62 and %q0..%q60 for the floating | |
238 | registers as "psuedo" registers. */ | |
239 | ||
240 | static struct sparc64_register_info sparc64_pseudo_register_info[] = | |
241 | { | |
242 | { "cwp", &builtin_type_int64 }, | |
243 | { "pstate", &builtin_type_int64 }, | |
244 | { "asi", &builtin_type_int64 }, | |
245 | { "ccr", &builtin_type_int64 }, | |
246 | ||
247 | { "d0", &builtin_type_double }, | |
248 | { "d2", &builtin_type_double }, | |
249 | { "d4", &builtin_type_double }, | |
250 | { "d6", &builtin_type_double }, | |
251 | { "d8", &builtin_type_double }, | |
252 | { "d10", &builtin_type_double }, | |
253 | { "d12", &builtin_type_double }, | |
254 | { "d14", &builtin_type_double }, | |
255 | { "d16", &builtin_type_double }, | |
256 | { "d18", &builtin_type_double }, | |
257 | { "d20", &builtin_type_double }, | |
258 | { "d22", &builtin_type_double }, | |
259 | { "d24", &builtin_type_double }, | |
260 | { "d26", &builtin_type_double }, | |
261 | { "d28", &builtin_type_double }, | |
262 | { "d30", &builtin_type_double }, | |
263 | { "d32", &builtin_type_double }, | |
264 | { "d34", &builtin_type_double }, | |
265 | { "d36", &builtin_type_double }, | |
266 | { "d38", &builtin_type_double }, | |
267 | { "d40", &builtin_type_double }, | |
268 | { "d42", &builtin_type_double }, | |
269 | { "d44", &builtin_type_double }, | |
270 | { "d46", &builtin_type_double }, | |
271 | { "d48", &builtin_type_double }, | |
272 | { "d50", &builtin_type_double }, | |
273 | { "d52", &builtin_type_double }, | |
274 | { "d54", &builtin_type_double }, | |
275 | { "d56", &builtin_type_double }, | |
276 | { "d58", &builtin_type_double }, | |
277 | { "d60", &builtin_type_double }, | |
278 | { "d62", &builtin_type_double }, | |
279 | ||
280 | { "q0", &builtin_type_long_double }, | |
281 | { "q4", &builtin_type_long_double }, | |
282 | { "q8", &builtin_type_long_double }, | |
283 | { "q12", &builtin_type_long_double }, | |
284 | { "q16", &builtin_type_long_double }, | |
285 | { "q20", &builtin_type_long_double }, | |
286 | { "q24", &builtin_type_long_double }, | |
287 | { "q28", &builtin_type_long_double }, | |
288 | { "q32", &builtin_type_long_double }, | |
289 | { "q36", &builtin_type_long_double }, | |
290 | { "q40", &builtin_type_long_double }, | |
291 | { "q44", &builtin_type_long_double }, | |
292 | { "q48", &builtin_type_long_double }, | |
293 | { "q52", &builtin_type_long_double }, | |
294 | { "q56", &builtin_type_long_double }, | |
295 | { "q60", &builtin_type_long_double } | |
296 | }; | |
297 | ||
298 | /* Total number of pseudo registers. */ | |
386c036b | 299 | #define SPARC64_NUM_PSEUDO_REGS ARRAY_SIZE (sparc64_pseudo_register_info) |
8b39fe56 MK |
300 | |
301 | /* Return the name of register REGNUM. */ | |
302 | ||
303 | static const char * | |
304 | sparc64_register_name (int regnum) | |
305 | { | |
306 | if (regnum >= 0 && regnum < SPARC64_NUM_REGS) | |
307 | return sparc64_register_info[regnum].name; | |
308 | ||
309 | if (regnum >= SPARC64_NUM_REGS | |
310 | && regnum < SPARC64_NUM_REGS + SPARC64_NUM_PSEUDO_REGS) | |
311 | return sparc64_pseudo_register_info[regnum - SPARC64_NUM_REGS].name; | |
312 | ||
313 | return NULL; | |
314 | } | |
315 | ||
316 | /* Return the GDB type object for the "standard" data type of data in | |
317 | register REGNUM. */ | |
318 | ||
319 | static struct type * | |
320 | sparc64_register_type (struct gdbarch *gdbarch, int regnum) | |
321 | { | |
322 | if (regnum >= SPARC64_NUM_REGS | |
323 | && regnum < SPARC64_NUM_REGS + SPARC64_NUM_PSEUDO_REGS) | |
324 | return *sparc64_pseudo_register_info[regnum - SPARC64_NUM_REGS].type; | |
325 | ||
326 | gdb_assert (regnum >= 0 && regnum < SPARC64_NUM_REGS); | |
327 | return *sparc64_register_info[regnum].type; | |
328 | } | |
329 | ||
330 | static void | |
331 | sparc64_pseudo_register_read (struct gdbarch *gdbarch, | |
332 | struct regcache *regcache, | |
333 | int regnum, void *buf) | |
334 | { | |
335 | gdb_assert (regnum >= SPARC64_NUM_REGS); | |
336 | ||
337 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM) | |
338 | { | |
339 | regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM); | |
340 | regcache_raw_read (regcache, regnum, buf); | |
341 | regcache_raw_read (regcache, regnum + 1, ((char *)buf) + 4); | |
342 | } | |
343 | else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM) | |
344 | { | |
345 | regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM); | |
346 | regcache_raw_read (regcache, regnum, buf); | |
347 | } | |
348 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM) | |
349 | { | |
350 | regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM); | |
351 | regcache_raw_read (regcache, regnum, buf); | |
352 | regcache_raw_read (regcache, regnum + 1, ((char *)buf) + 4); | |
353 | regcache_raw_read (regcache, regnum + 2, ((char *)buf) + 8); | |
354 | regcache_raw_read (regcache, regnum + 3, ((char *)buf) + 12); | |
355 | } | |
356 | else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM) | |
357 | { | |
358 | regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM); | |
359 | regcache_raw_read (regcache, regnum, buf); | |
360 | regcache_raw_read (regcache, regnum + 1, ((char *)buf) + 8); | |
361 | } | |
362 | else if (regnum == SPARC64_CWP_REGNUM | |
363 | || regnum == SPARC64_PSTATE_REGNUM | |
364 | || regnum == SPARC64_ASI_REGNUM | |
365 | || regnum == SPARC64_CCR_REGNUM) | |
366 | { | |
367 | ULONGEST state; | |
368 | ||
369 | regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); | |
370 | switch (regnum) | |
371 | { | |
3567a8ea | 372 | case SPARC64_CWP_REGNUM: |
8b39fe56 MK |
373 | state = (state >> 0) & ((1 << 5) - 1); |
374 | break; | |
3567a8ea | 375 | case SPARC64_PSTATE_REGNUM: |
8b39fe56 MK |
376 | state = (state >> 8) & ((1 << 12) - 1); |
377 | break; | |
3567a8ea | 378 | case SPARC64_ASI_REGNUM: |
8b39fe56 MK |
379 | state = (state >> 24) & ((1 << 8) - 1); |
380 | break; | |
3567a8ea | 381 | case SPARC64_CCR_REGNUM: |
8b39fe56 MK |
382 | state = (state >> 32) & ((1 << 8) - 1); |
383 | break; | |
384 | } | |
385 | store_unsigned_integer (buf, 8, state); | |
386 | } | |
387 | } | |
388 | ||
389 | static void | |
390 | sparc64_pseudo_register_write (struct gdbarch *gdbarch, | |
391 | struct regcache *regcache, | |
392 | int regnum, const void *buf) | |
393 | { | |
394 | gdb_assert (regnum >= SPARC64_NUM_REGS); | |
395 | ||
396 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D30_REGNUM) | |
397 | { | |
398 | regnum = SPARC_F0_REGNUM + 2 * (regnum - SPARC64_D0_REGNUM); | |
399 | regcache_raw_write (regcache, regnum, buf); | |
400 | regcache_raw_write (regcache, regnum + 1, ((const char *)buf) + 4); | |
401 | } | |
402 | else if (regnum >= SPARC64_D32_REGNUM && regnum <= SPARC64_D62_REGNUM) | |
403 | { | |
404 | regnum = SPARC64_F32_REGNUM + (regnum - SPARC64_D32_REGNUM); | |
405 | regcache_raw_write (regcache, regnum, buf); | |
406 | } | |
407 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q28_REGNUM) | |
408 | { | |
409 | regnum = SPARC_F0_REGNUM + 4 * (regnum - SPARC64_Q0_REGNUM); | |
410 | regcache_raw_write (regcache, regnum, buf); | |
411 | regcache_raw_write (regcache, regnum + 1, ((const char *)buf) + 4); | |
412 | regcache_raw_write (regcache, regnum + 2, ((const char *)buf) + 8); | |
413 | regcache_raw_write (regcache, regnum + 3, ((const char *)buf) + 12); | |
414 | } | |
415 | else if (regnum >= SPARC64_Q32_REGNUM && regnum <= SPARC64_Q60_REGNUM) | |
416 | { | |
417 | regnum = SPARC64_F32_REGNUM + 2 * (regnum - SPARC64_Q32_REGNUM); | |
418 | regcache_raw_write (regcache, regnum, buf); | |
419 | regcache_raw_write (regcache, regnum + 1, ((const char *)buf) + 8); | |
420 | } | |
3567a8ea MK |
421 | else if (regnum == SPARC64_CWP_REGNUM |
422 | || regnum == SPARC64_PSTATE_REGNUM | |
423 | || regnum == SPARC64_ASI_REGNUM | |
424 | || regnum == SPARC64_CCR_REGNUM) | |
425 | { | |
426 | ULONGEST state, bits; | |
427 | ||
428 | regcache_raw_read_unsigned (regcache, SPARC64_STATE_REGNUM, &state); | |
429 | bits = extract_unsigned_integer (buf, 8); | |
430 | switch (regnum) | |
431 | { | |
432 | case SPARC64_CWP_REGNUM: | |
433 | state |= ((bits & ((1 << 5) - 1)) << 0); | |
434 | break; | |
435 | case SPARC64_PSTATE_REGNUM: | |
436 | state |= ((bits & ((1 << 12) - 1)) << 8); | |
437 | break; | |
438 | case SPARC64_ASI_REGNUM: | |
439 | state |= ((bits & ((1 << 8) - 1)) << 24); | |
440 | break; | |
441 | case SPARC64_CCR_REGNUM: | |
442 | state |= ((bits & ((1 << 8) - 1)) << 32); | |
443 | break; | |
444 | } | |
445 | regcache_raw_write_unsigned (regcache, SPARC64_STATE_REGNUM, state); | |
446 | } | |
8b39fe56 | 447 | } |
8b39fe56 MK |
448 | \f |
449 | ||
8b39fe56 MK |
450 | /* Return PC of first real instruction of the function starting at |
451 | START_PC. */ | |
452 | ||
453 | static CORE_ADDR | |
454 | sparc64_skip_prologue (CORE_ADDR start_pc) | |
455 | { | |
456 | struct symtab_and_line sal; | |
457 | CORE_ADDR func_start, func_end; | |
386c036b | 458 | struct sparc_frame_cache cache; |
8b39fe56 MK |
459 | |
460 | /* This is the preferred method, find the end of the prologue by | |
461 | using the debugging information. */ | |
462 | if (find_pc_partial_function (start_pc, NULL, &func_start, &func_end)) | |
463 | { | |
464 | sal = find_pc_line (func_start, 0); | |
465 | ||
466 | if (sal.end < func_end | |
467 | && start_pc <= sal.end) | |
468 | return sal.end; | |
469 | } | |
470 | ||
386c036b | 471 | return sparc_analyze_prologue (start_pc, 0xffffffffffffffffULL, &cache); |
8b39fe56 MK |
472 | } |
473 | ||
474 | /* Normal frames. */ | |
475 | ||
386c036b | 476 | static struct sparc_frame_cache * |
8b39fe56 MK |
477 | sparc64_frame_cache (struct frame_info *next_frame, void **this_cache) |
478 | { | |
386c036b | 479 | return sparc_frame_cache (next_frame, this_cache); |
8b39fe56 MK |
480 | } |
481 | ||
482 | static void | |
483 | sparc64_frame_this_id (struct frame_info *next_frame, void **this_cache, | |
484 | struct frame_id *this_id) | |
485 | { | |
386c036b | 486 | struct sparc_frame_cache *cache = |
8b39fe56 MK |
487 | sparc64_frame_cache (next_frame, this_cache); |
488 | ||
489 | /* This marks the outermost frame. */ | |
490 | if (cache->base == 0) | |
491 | return; | |
492 | ||
493 | (*this_id) = frame_id_build (cache->base, cache->pc); | |
494 | } | |
495 | ||
496 | static void | |
497 | sparc64_frame_prev_register (struct frame_info *next_frame, void **this_cache, | |
498 | int regnum, int *optimizedp, | |
499 | enum lval_type *lvalp, CORE_ADDR *addrp, | |
500 | int *realnump, void *valuep) | |
501 | { | |
386c036b | 502 | struct sparc_frame_cache *cache = |
8b39fe56 MK |
503 | sparc64_frame_cache (next_frame, this_cache); |
504 | ||
505 | if (regnum == SPARC64_PC_REGNUM || regnum == SPARC64_NPC_REGNUM) | |
506 | { | |
507 | *optimizedp = 0; | |
508 | *lvalp = not_lval; | |
509 | *addrp = 0; | |
510 | *realnump = -1; | |
511 | if (valuep) | |
512 | { | |
513 | CORE_ADDR pc = (regnum == SPARC64_NPC_REGNUM) ? 4 : 0; | |
514 | ||
515 | regnum = cache->frameless_p ? SPARC_O7_REGNUM : SPARC_I7_REGNUM; | |
516 | pc += frame_unwind_register_unsigned (next_frame, regnum) + 8; | |
517 | store_unsigned_integer (valuep, 8, pc); | |
518 | } | |
519 | return; | |
520 | } | |
521 | ||
f700a364 MK |
522 | /* Handle StackGhost. */ |
523 | { | |
524 | ULONGEST wcookie = sparc_fetch_wcookie (); | |
525 | ||
526 | if (wcookie != 0 && !cache->frameless_p && regnum == SPARC_I7_REGNUM) | |
527 | { | |
528 | *optimizedp = 0; | |
529 | *lvalp = not_lval; | |
530 | *addrp = 0; | |
531 | *realnump = -1; | |
532 | if (valuep) | |
533 | { | |
534 | CORE_ADDR addr = cache->base + (regnum - SPARC_L0_REGNUM) * 8; | |
535 | ULONGEST i7; | |
536 | ||
537 | /* Read the value in from memory. */ | |
538 | i7 = get_frame_memory_unsigned (next_frame, addr, 8); | |
539 | store_unsigned_integer (valuep, 8, i7 ^ wcookie); | |
540 | } | |
541 | return; | |
542 | } | |
543 | } | |
544 | ||
8b39fe56 MK |
545 | /* The previous frame's `local' and `in' registers have been saved |
546 | in the register save area. */ | |
547 | if (!cache->frameless_p | |
548 | && regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) | |
549 | { | |
550 | *optimizedp = 0; | |
551 | *lvalp = lval_memory; | |
5b2d44a0 | 552 | *addrp = cache->base + (regnum - SPARC_L0_REGNUM) * 8; |
8b39fe56 MK |
553 | *realnump = -1; |
554 | if (valuep) | |
555 | { | |
556 | struct gdbarch *gdbarch = get_frame_arch (next_frame); | |
557 | ||
558 | /* Read the value in from memory. */ | |
559 | read_memory (*addrp, valuep, register_size (gdbarch, regnum)); | |
560 | } | |
561 | return; | |
562 | } | |
563 | ||
564 | /* The previous frame's `out' registers are accessable as the | |
565 | current frame's `in' registers. */ | |
566 | if (!cache->frameless_p | |
567 | && regnum >= SPARC_O0_REGNUM && regnum <= SPARC_O7_REGNUM) | |
568 | regnum += (SPARC_I0_REGNUM - SPARC_O0_REGNUM); | |
569 | ||
00b25ff3 AC |
570 | *optimizedp = 0; |
571 | *lvalp = lval_register; | |
572 | *addrp = 0; | |
573 | *realnump = regnum; | |
574 | if (valuep) | |
575 | frame_unwind_register (next_frame, regnum, valuep); | |
8b39fe56 MK |
576 | } |
577 | ||
578 | static const struct frame_unwind sparc64_frame_unwind = | |
579 | { | |
580 | NORMAL_FRAME, | |
581 | sparc64_frame_this_id, | |
582 | sparc64_frame_prev_register | |
583 | }; | |
584 | ||
585 | static const struct frame_unwind * | |
586 | sparc64_frame_sniffer (struct frame_info *next_frame) | |
587 | { | |
588 | return &sparc64_frame_unwind; | |
589 | } | |
590 | \f | |
591 | ||
592 | static CORE_ADDR | |
593 | sparc64_frame_base_address (struct frame_info *next_frame, void **this_cache) | |
594 | { | |
386c036b | 595 | struct sparc_frame_cache *cache = |
8b39fe56 MK |
596 | sparc64_frame_cache (next_frame, this_cache); |
597 | ||
5b2d44a0 | 598 | return cache->base; |
8b39fe56 MK |
599 | } |
600 | ||
601 | static const struct frame_base sparc64_frame_base = | |
602 | { | |
603 | &sparc64_frame_unwind, | |
604 | sparc64_frame_base_address, | |
605 | sparc64_frame_base_address, | |
606 | sparc64_frame_base_address | |
607 | }; | |
8b39fe56 MK |
608 | \f |
609 | /* Check whether TYPE must be 16-byte aligned. */ | |
610 | ||
611 | static int | |
612 | sparc64_16_byte_align_p (struct type *type) | |
613 | { | |
614 | if (sparc64_floating_p (type) && TYPE_LENGTH (type) == 16) | |
615 | return 1; | |
616 | ||
617 | if (sparc64_structure_or_union_p (type)) | |
618 | { | |
619 | int i; | |
620 | ||
621 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
60af1db2 MK |
622 | { |
623 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); | |
624 | ||
625 | if (sparc64_16_byte_align_p (subtype)) | |
626 | return 1; | |
627 | } | |
8b39fe56 MK |
628 | } |
629 | ||
630 | return 0; | |
631 | } | |
632 | ||
633 | /* Store floating fields of element ELEMENT of an "parameter array" | |
634 | that has type TYPE and is stored at BITPOS in VALBUF in the | |
635 | apropriate registers of REGCACHE. This function can be called | |
636 | recursively and therefore handles floating types in addition to | |
637 | structures. */ | |
638 | ||
639 | static void | |
640 | sparc64_store_floating_fields (struct regcache *regcache, struct type *type, | |
e219d7ce | 641 | const char *valbuf, int element, int bitpos) |
8b39fe56 MK |
642 | { |
643 | gdb_assert (element < 16); | |
644 | ||
645 | if (sparc64_floating_p (type)) | |
646 | { | |
647 | int len = TYPE_LENGTH (type); | |
648 | int regnum; | |
649 | ||
650 | if (len == 16) | |
651 | { | |
652 | gdb_assert (bitpos == 0); | |
653 | gdb_assert ((element % 2) == 0); | |
654 | ||
655 | regnum = SPARC64_Q0_REGNUM + element / 2; | |
656 | regcache_cooked_write (regcache, regnum, valbuf); | |
657 | } | |
658 | else if (len == 8) | |
659 | { | |
660 | gdb_assert (bitpos == 0 || bitpos == 64); | |
661 | ||
662 | regnum = SPARC64_D0_REGNUM + element + bitpos / 64; | |
663 | regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8)); | |
664 | } | |
665 | else | |
666 | { | |
667 | gdb_assert (len == 4); | |
668 | gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 128); | |
669 | ||
670 | regnum = SPARC_F0_REGNUM + element * 2 + bitpos / 32; | |
671 | regcache_cooked_write (regcache, regnum, valbuf + (bitpos / 8)); | |
672 | } | |
673 | } | |
674 | else if (sparc64_structure_or_union_p (type)) | |
675 | { | |
676 | int i; | |
677 | ||
678 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
60af1db2 MK |
679 | { |
680 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); | |
681 | int subpos = bitpos + TYPE_FIELD_BITPOS (type, i); | |
682 | ||
683 | sparc64_store_floating_fields (regcache, subtype, valbuf, | |
684 | element, subpos); | |
685 | } | |
200cc553 MK |
686 | |
687 | /* GCC has an interesting bug. If TYPE is a structure that has | |
688 | a single `float' member, GCC doesn't treat it as a structure | |
689 | at all, but rather as an ordinary `float' argument. This | |
690 | argument will be stored in %f1, as required by the psABI. | |
691 | However, as a member of a structure the psABI requires it to | |
5154b0cd MK |
692 | be stored in %f0. This bug is present in GCC 3.3.2, but |
693 | probably in older releases to. To appease GCC, if a | |
694 | structure has only a single `float' member, we store its | |
695 | value in %f1 too (we already have stored in %f0). */ | |
200cc553 MK |
696 | if (TYPE_NFIELDS (type) == 1) |
697 | { | |
698 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, 0)); | |
699 | ||
700 | if (sparc64_floating_p (subtype) && TYPE_LENGTH (subtype) == 4) | |
701 | regcache_cooked_write (regcache, SPARC_F1_REGNUM, valbuf); | |
702 | } | |
8b39fe56 MK |
703 | } |
704 | } | |
705 | ||
706 | /* Fetch floating fields from a variable of type TYPE from the | |
707 | appropriate registers for BITPOS in REGCACHE and store it at BITPOS | |
708 | in VALBUF. This function can be called recursively and therefore | |
709 | handles floating types in addition to structures. */ | |
710 | ||
711 | static void | |
712 | sparc64_extract_floating_fields (struct regcache *regcache, struct type *type, | |
713 | char *valbuf, int bitpos) | |
714 | { | |
715 | if (sparc64_floating_p (type)) | |
716 | { | |
717 | int len = TYPE_LENGTH (type); | |
718 | int regnum; | |
719 | ||
720 | if (len == 16) | |
721 | { | |
722 | gdb_assert (bitpos == 0 || bitpos == 128); | |
723 | ||
724 | regnum = SPARC64_Q0_REGNUM + bitpos / 128; | |
725 | regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); | |
726 | } | |
727 | else if (len == 8) | |
728 | { | |
729 | gdb_assert (bitpos % 64 == 0 && bitpos >= 0 && bitpos < 256); | |
730 | ||
731 | regnum = SPARC64_D0_REGNUM + bitpos / 64; | |
732 | regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); | |
733 | } | |
734 | else | |
735 | { | |
736 | gdb_assert (len == 4); | |
737 | gdb_assert (bitpos % 32 == 0 && bitpos >= 0 && bitpos < 256); | |
738 | ||
739 | regnum = SPARC_F0_REGNUM + bitpos / 32; | |
740 | regcache_cooked_read (regcache, regnum, valbuf + (bitpos / 8)); | |
741 | } | |
742 | } | |
743 | else if (sparc64_structure_or_union_p (type)) | |
744 | { | |
745 | int i; | |
746 | ||
747 | for (i = 0; i < TYPE_NFIELDS (type); i++) | |
60af1db2 MK |
748 | { |
749 | struct type *subtype = check_typedef (TYPE_FIELD_TYPE (type, i)); | |
750 | int subpos = bitpos + TYPE_FIELD_BITPOS (type, i); | |
751 | ||
752 | sparc64_extract_floating_fields (regcache, subtype, valbuf, subpos); | |
753 | } | |
8b39fe56 MK |
754 | } |
755 | } | |
756 | ||
757 | /* Store the NARGS arguments ARGS and STRUCT_ADDR (if STRUCT_RETURN is | |
758 | non-zero) in REGCACHE and on the stack (starting from address SP). */ | |
759 | ||
760 | static CORE_ADDR | |
761 | sparc64_store_arguments (struct regcache *regcache, int nargs, | |
762 | struct value **args, CORE_ADDR sp, | |
763 | int struct_return, CORE_ADDR struct_addr) | |
764 | { | |
765 | /* Number of extended words in the "parameter array". */ | |
766 | int num_elements = 0; | |
767 | int element = 0; | |
768 | int i; | |
769 | ||
770 | /* Take BIAS into account. */ | |
771 | sp += BIAS; | |
772 | ||
773 | /* First we calculate the number of extended words in the "parameter | |
774 | array". While doing so we also convert some of the arguments. */ | |
775 | ||
776 | if (struct_return) | |
777 | num_elements++; | |
778 | ||
779 | for (i = 0; i < nargs; i++) | |
780 | { | |
4991999e | 781 | struct type *type = value_type (args[i]); |
8b39fe56 MK |
782 | int len = TYPE_LENGTH (type); |
783 | ||
784 | if (sparc64_structure_or_union_p (type)) | |
785 | { | |
786 | /* Structure or Union arguments. */ | |
787 | if (len <= 16) | |
788 | { | |
789 | if (num_elements % 2 && sparc64_16_byte_align_p (type)) | |
790 | num_elements++; | |
791 | num_elements += ((len + 7) / 8); | |
792 | } | |
793 | else | |
794 | { | |
795 | /* The psABI says that "Structures or unions larger than | |
796 | sixteen bytes are copied by the caller and passed | |
797 | indirectly; the caller will pass the address of a | |
798 | correctly aligned structure value. This sixty-four | |
799 | bit address will occupy one word in the parameter | |
800 | array, and may be promoted to an %o register like any | |
801 | other pointer value." Allocate memory for these | |
802 | values on the stack. */ | |
803 | sp -= len; | |
804 | ||
805 | /* Use 16-byte alignment for these values. That's | |
806 | always correct, and wasting a few bytes shouldn't be | |
807 | a problem. */ | |
808 | sp &= ~0xf; | |
809 | ||
0fd88904 | 810 | write_memory (sp, value_contents (args[i]), len); |
8b39fe56 MK |
811 | args[i] = value_from_pointer (lookup_pointer_type (type), sp); |
812 | num_elements++; | |
813 | } | |
814 | } | |
815 | else if (sparc64_floating_p (type)) | |
816 | { | |
817 | /* Floating arguments. */ | |
818 | ||
819 | if (len == 16) | |
820 | { | |
821 | /* The psABI says that "Each quad-precision parameter | |
822 | value will be assigned to two extended words in the | |
823 | parameter array. */ | |
824 | num_elements += 2; | |
825 | ||
826 | /* The psABI says that "Long doubles must be | |
827 | quad-aligned, and thus a hole might be introduced | |
828 | into the parameter array to force alignment." Skip | |
829 | an element if necessary. */ | |
830 | if (num_elements % 2) | |
831 | num_elements++; | |
832 | } | |
833 | else | |
834 | num_elements++; | |
835 | } | |
836 | else | |
837 | { | |
838 | /* Integral and pointer arguments. */ | |
839 | gdb_assert (sparc64_integral_or_pointer_p (type)); | |
840 | ||
841 | /* The psABI says that "Each argument value of integral type | |
842 | smaller than an extended word will be widened by the | |
843 | caller to an extended word according to the signed-ness | |
844 | of the argument type." */ | |
845 | if (len < 8) | |
846 | args[i] = value_cast (builtin_type_int64, args[i]); | |
847 | num_elements++; | |
848 | } | |
849 | } | |
850 | ||
851 | /* Allocate the "parameter array". */ | |
852 | sp -= num_elements * 8; | |
853 | ||
854 | /* The psABI says that "Every stack frame must be 16-byte aligned." */ | |
855 | sp &= ~0xf; | |
856 | ||
857 | /* Now we store the arguments in to the "paramater array". Some | |
858 | Integer or Pointer arguments and Structure or Union arguments | |
859 | will be passed in %o registers. Some Floating arguments and | |
860 | floating members of structures are passed in floating-point | |
861 | registers. However, for functions with variable arguments, | |
862 | floating arguments are stored in an %0 register, and for | |
863 | functions without a prototype floating arguments are stored in | |
864 | both a floating-point and an %o registers, or a floating-point | |
865 | register and memory. To simplify the logic here we always pass | |
866 | arguments in memory, an %o register, and a floating-point | |
867 | register if appropriate. This should be no problem since the | |
868 | contents of any unused memory or registers in the "parameter | |
869 | array" are undefined. */ | |
870 | ||
871 | if (struct_return) | |
872 | { | |
873 | regcache_cooked_write_unsigned (regcache, SPARC_O0_REGNUM, struct_addr); | |
874 | element++; | |
875 | } | |
876 | ||
877 | for (i = 0; i < nargs; i++) | |
878 | { | |
e219d7ce | 879 | const char *valbuf = value_contents (args[i]); |
4991999e | 880 | struct type *type = value_type (args[i]); |
8b39fe56 MK |
881 | int len = TYPE_LENGTH (type); |
882 | int regnum = -1; | |
883 | char buf[16]; | |
884 | ||
885 | if (sparc64_structure_or_union_p (type)) | |
886 | { | |
887 | /* Structure or Union arguments. */ | |
888 | gdb_assert (len <= 16); | |
889 | memset (buf, 0, sizeof (buf)); | |
890 | valbuf = memcpy (buf, valbuf, len); | |
891 | ||
892 | if (element % 2 && sparc64_16_byte_align_p (type)) | |
893 | element++; | |
894 | ||
895 | if (element < 6) | |
896 | { | |
897 | regnum = SPARC_O0_REGNUM + element; | |
898 | if (len > 8 && element < 5) | |
899 | regcache_cooked_write (regcache, regnum + 1, valbuf + 8); | |
900 | } | |
901 | ||
902 | if (element < 16) | |
903 | sparc64_store_floating_fields (regcache, type, valbuf, element, 0); | |
904 | } | |
905 | else if (sparc64_floating_p (type)) | |
906 | { | |
907 | /* Floating arguments. */ | |
908 | if (len == 16) | |
909 | { | |
910 | if (element % 2) | |
911 | element++; | |
912 | if (element < 16) | |
913 | regnum = SPARC64_Q0_REGNUM + element / 2; | |
914 | } | |
915 | else if (len == 8) | |
916 | { | |
917 | if (element < 16) | |
918 | regnum = SPARC64_D0_REGNUM + element; | |
919 | } | |
920 | else | |
921 | { | |
922 | /* The psABI says "Each single-precision parameter value | |
923 | will be assigned to one extended word in the | |
924 | parameter array, and right-justified within that | |
925 | word; the left half (even floatregister) is | |
926 | undefined." Even though the psABI says that "the | |
927 | left half is undefined", set it to zero here. */ | |
928 | memset (buf, 0, 4); | |
8ada74e3 MK |
929 | memcpy (buf + 4, valbuf, 4); |
930 | valbuf = buf; | |
8b39fe56 MK |
931 | len = 8; |
932 | if (element < 16) | |
8ada74e3 | 933 | regnum = SPARC64_D0_REGNUM + element; |
8b39fe56 MK |
934 | } |
935 | } | |
936 | else | |
937 | { | |
938 | /* Integral and pointer arguments. */ | |
939 | gdb_assert (len == 8); | |
940 | if (element < 6) | |
941 | regnum = SPARC_O0_REGNUM + element; | |
942 | } | |
943 | ||
944 | if (regnum != -1) | |
945 | { | |
946 | regcache_cooked_write (regcache, regnum, valbuf); | |
947 | ||
948 | /* If we're storing the value in a floating-point register, | |
949 | also store it in the corresponding %0 register(s). */ | |
950 | if (regnum >= SPARC64_D0_REGNUM && regnum <= SPARC64_D10_REGNUM) | |
951 | { | |
952 | gdb_assert (element < 6); | |
953 | regnum = SPARC_O0_REGNUM + element; | |
954 | regcache_cooked_write (regcache, regnum, valbuf); | |
955 | } | |
956 | else if (regnum >= SPARC64_Q0_REGNUM && regnum <= SPARC64_Q8_REGNUM) | |
957 | { | |
958 | gdb_assert (element < 6); | |
959 | regnum = SPARC_O0_REGNUM + element; | |
960 | regcache_cooked_write (regcache, regnum, valbuf); | |
d47079be | 961 | regcache_cooked_write (regcache, regnum + 1, valbuf + 8); |
8b39fe56 MK |
962 | } |
963 | } | |
964 | ||
c4f2d4d7 | 965 | /* Always store the argument in memory. */ |
8b39fe56 MK |
966 | write_memory (sp + element * 8, valbuf, len); |
967 | element += ((len + 7) / 8); | |
968 | } | |
969 | ||
970 | gdb_assert (element == num_elements); | |
971 | ||
972 | /* Take BIAS into account. */ | |
973 | sp -= BIAS; | |
974 | return sp; | |
975 | } | |
976 | ||
977 | static CORE_ADDR | |
7d9b040b | 978 | sparc64_push_dummy_call (struct gdbarch *gdbarch, struct value *function, |
8b39fe56 MK |
979 | struct regcache *regcache, CORE_ADDR bp_addr, |
980 | int nargs, struct value **args, CORE_ADDR sp, | |
981 | int struct_return, CORE_ADDR struct_addr) | |
982 | { | |
983 | /* Set return address. */ | |
984 | regcache_cooked_write_unsigned (regcache, SPARC_O7_REGNUM, bp_addr - 8); | |
985 | ||
986 | /* Set up function arguments. */ | |
987 | sp = sparc64_store_arguments (regcache, nargs, args, sp, | |
988 | struct_return, struct_addr); | |
989 | ||
990 | /* Allocate the register save area. */ | |
991 | sp -= 16 * 8; | |
992 | ||
993 | /* Stack should be 16-byte aligned at this point. */ | |
3567a8ea | 994 | gdb_assert ((sp + BIAS) % 16 == 0); |
8b39fe56 MK |
995 | |
996 | /* Finally, update the stack pointer. */ | |
997 | regcache_cooked_write_unsigned (regcache, SPARC_SP_REGNUM, sp); | |
998 | ||
5b2d44a0 | 999 | return sp + BIAS; |
8b39fe56 MK |
1000 | } |
1001 | \f | |
1002 | ||
1003 | /* Extract from an array REGBUF containing the (raw) register state, a | |
1004 | function return value of TYPE, and copy that into VALBUF. */ | |
1005 | ||
1006 | static void | |
1007 | sparc64_extract_return_value (struct type *type, struct regcache *regcache, | |
1008 | void *valbuf) | |
1009 | { | |
1010 | int len = TYPE_LENGTH (type); | |
1011 | char buf[32]; | |
1012 | int i; | |
1013 | ||
1014 | if (sparc64_structure_or_union_p (type)) | |
1015 | { | |
1016 | /* Structure or Union return values. */ | |
1017 | gdb_assert (len <= 32); | |
1018 | ||
1019 | for (i = 0; i < ((len + 7) / 8); i++) | |
1020 | regcache_cooked_read (regcache, SPARC_O0_REGNUM + i, buf + i * 8); | |
1021 | if (TYPE_CODE (type) != TYPE_CODE_UNION) | |
1022 | sparc64_extract_floating_fields (regcache, type, buf, 0); | |
1023 | memcpy (valbuf, buf, len); | |
1024 | } | |
1025 | else if (sparc64_floating_p (type)) | |
1026 | { | |
1027 | /* Floating return values. */ | |
1028 | for (i = 0; i < len / 4; i++) | |
1029 | regcache_cooked_read (regcache, SPARC_F0_REGNUM + i, buf + i * 4); | |
1030 | memcpy (valbuf, buf, len); | |
1031 | } | |
1032 | else | |
1033 | { | |
1034 | /* Integral and pointer return values. */ | |
1035 | gdb_assert (sparc64_integral_or_pointer_p (type)); | |
1036 | ||
1037 | /* Just stripping off any unused bytes should preserve the | |
1038 | signed-ness just fine. */ | |
1039 | regcache_cooked_read (regcache, SPARC_O0_REGNUM, buf); | |
1040 | memcpy (valbuf, buf + 8 - len, len); | |
1041 | } | |
1042 | } | |
1043 | ||
1044 | /* Write into the appropriate registers a function return value stored | |
1045 | in VALBUF of type TYPE. */ | |
1046 | ||
1047 | static void | |
1048 | sparc64_store_return_value (struct type *type, struct regcache *regcache, | |
1049 | const void *valbuf) | |
1050 | { | |
1051 | int len = TYPE_LENGTH (type); | |
1052 | char buf[16]; | |
1053 | int i; | |
1054 | ||
1055 | if (sparc64_structure_or_union_p (type)) | |
1056 | { | |
1057 | /* Structure or Union return values. */ | |
1058 | gdb_assert (len <= 32); | |
1059 | ||
1060 | /* Simplify matters by storing the complete value (including | |
1061 | floating members) into %o0 and %o1. Floating members are | |
1062 | also store in the appropriate floating-point registers. */ | |
1063 | memset (buf, 0, sizeof (buf)); | |
1064 | memcpy (buf, valbuf, len); | |
1065 | for (i = 0; i < ((len + 7) / 8); i++) | |
60af1db2 | 1066 | regcache_cooked_write (regcache, SPARC_O0_REGNUM + i, buf + i * 8); |
8b39fe56 MK |
1067 | if (TYPE_CODE (type) != TYPE_CODE_UNION) |
1068 | sparc64_store_floating_fields (regcache, type, buf, 0, 0); | |
1069 | } | |
1070 | else if (sparc64_floating_p (type)) | |
1071 | { | |
1072 | /* Floating return values. */ | |
1073 | memcpy (buf, valbuf, len); | |
1074 | for (i = 0; i < len / 4; i++) | |
1075 | regcache_cooked_write (regcache, SPARC_F0_REGNUM + i, buf + i * 4); | |
1076 | } | |
1077 | else | |
1078 | { | |
1079 | /* Integral and pointer return values. */ | |
1080 | gdb_assert (sparc64_integral_or_pointer_p (type)); | |
1081 | ||
1082 | /* ??? Do we need to do any sign-extension here? */ | |
1083 | memset (buf, 0, 8); | |
1084 | memcpy (buf + 8 - len, valbuf, len); | |
1085 | regcache_cooked_write (regcache, SPARC_O0_REGNUM, buf); | |
1086 | } | |
1087 | } | |
1088 | ||
60af1db2 MK |
1089 | static enum return_value_convention |
1090 | sparc64_return_value (struct gdbarch *gdbarch, struct type *type, | |
1091 | struct regcache *regcache, void *readbuf, | |
1092 | const void *writebuf) | |
8b39fe56 | 1093 | { |
60af1db2 MK |
1094 | if (TYPE_LENGTH (type) > 32) |
1095 | return RETURN_VALUE_STRUCT_CONVENTION; | |
1096 | ||
1097 | if (readbuf) | |
1098 | sparc64_extract_return_value (type, regcache, readbuf); | |
1099 | if (writebuf) | |
1100 | sparc64_store_return_value (type, regcache, writebuf); | |
1101 | ||
1102 | return RETURN_VALUE_REGISTER_CONVENTION; | |
8b39fe56 | 1103 | } |
8b39fe56 | 1104 | \f |
8b39fe56 MK |
1105 | |
1106 | void | |
386c036b | 1107 | sparc64_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) |
8b39fe56 | 1108 | { |
386c036b | 1109 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); |
8b39fe56 | 1110 | |
386c036b MK |
1111 | tdep->pc_regnum = SPARC64_PC_REGNUM; |
1112 | tdep->npc_regnum = SPARC64_NPC_REGNUM; | |
8b39fe56 | 1113 | |
386c036b | 1114 | /* This is what all the fuss is about. */ |
8b39fe56 MK |
1115 | set_gdbarch_long_bit (gdbarch, 64); |
1116 | set_gdbarch_long_long_bit (gdbarch, 64); | |
1117 | set_gdbarch_ptr_bit (gdbarch, 64); | |
8b39fe56 MK |
1118 | |
1119 | set_gdbarch_num_regs (gdbarch, SPARC64_NUM_REGS); | |
1120 | set_gdbarch_register_name (gdbarch, sparc64_register_name); | |
1121 | set_gdbarch_register_type (gdbarch, sparc64_register_type); | |
1122 | set_gdbarch_num_pseudo_regs (gdbarch, SPARC64_NUM_PSEUDO_REGS); | |
1123 | set_gdbarch_pseudo_register_read (gdbarch, sparc64_pseudo_register_read); | |
1124 | set_gdbarch_pseudo_register_write (gdbarch, sparc64_pseudo_register_write); | |
1125 | ||
1126 | /* Register numbers of various important registers. */ | |
8b39fe56 | 1127 | set_gdbarch_pc_regnum (gdbarch, SPARC64_PC_REGNUM); /* %pc */ |
8b39fe56 MK |
1128 | |
1129 | /* Call dummy code. */ | |
386c036b MK |
1130 | set_gdbarch_call_dummy_location (gdbarch, AT_ENTRY_POINT); |
1131 | set_gdbarch_push_dummy_code (gdbarch, NULL); | |
8b39fe56 MK |
1132 | set_gdbarch_push_dummy_call (gdbarch, sparc64_push_dummy_call); |
1133 | ||
60af1db2 | 1134 | set_gdbarch_return_value (gdbarch, sparc64_return_value); |
386c036b MK |
1135 | set_gdbarch_stabs_argument_has_addr |
1136 | (gdbarch, default_stabs_argument_has_addr); | |
8b39fe56 MK |
1137 | |
1138 | set_gdbarch_skip_prologue (gdbarch, sparc64_skip_prologue); | |
1139 | ||
386c036b | 1140 | frame_unwind_append_sniffer (gdbarch, sparc64_frame_sniffer); |
8b39fe56 | 1141 | frame_base_set_default (gdbarch, &sparc64_frame_base); |
386c036b MK |
1142 | } |
1143 | \f | |
8b39fe56 | 1144 | |
386c036b | 1145 | /* Helper functions for dealing with register sets. */ |
8b39fe56 | 1146 | |
386c036b MK |
1147 | #define TSTATE_CWP 0x000000000000001fULL |
1148 | #define TSTATE_ICC 0x0000000f00000000ULL | |
1149 | #define TSTATE_XCC 0x000000f000000000ULL | |
8b39fe56 | 1150 | |
386c036b MK |
1151 | #define PSR_S 0x00000080 |
1152 | #define PSR_ICC 0x00f00000 | |
1153 | #define PSR_VERS 0x0f000000 | |
1154 | #define PSR_IMPL 0xf0000000 | |
1155 | #define PSR_V8PLUS 0xff000000 | |
1156 | #define PSR_XCC 0x000f0000 | |
8b39fe56 | 1157 | |
3567a8ea | 1158 | void |
386c036b MK |
1159 | sparc64_supply_gregset (const struct sparc_gregset *gregset, |
1160 | struct regcache *regcache, | |
1161 | int regnum, const void *gregs) | |
8b39fe56 | 1162 | { |
386c036b MK |
1163 | int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); |
1164 | const char *regs = gregs; | |
8b39fe56 MK |
1165 | int i; |
1166 | ||
386c036b | 1167 | if (sparc32) |
8b39fe56 | 1168 | { |
386c036b MK |
1169 | if (regnum == SPARC32_PSR_REGNUM || regnum == -1) |
1170 | { | |
1171 | int offset = gregset->r_tstate_offset; | |
1172 | ULONGEST tstate, psr; | |
1173 | char buf[4]; | |
1174 | ||
1175 | tstate = extract_unsigned_integer (regs + offset, 8); | |
1176 | psr = ((tstate & TSTATE_CWP) | PSR_S | ((tstate & TSTATE_ICC) >> 12) | |
1177 | | ((tstate & TSTATE_XCC) >> 20) | PSR_V8PLUS); | |
1178 | store_unsigned_integer (buf, 4, psr); | |
1179 | regcache_raw_supply (regcache, SPARC32_PSR_REGNUM, buf); | |
1180 | } | |
1181 | ||
1182 | if (regnum == SPARC32_PC_REGNUM || regnum == -1) | |
1183 | regcache_raw_supply (regcache, SPARC32_PC_REGNUM, | |
1184 | regs + gregset->r_pc_offset + 4); | |
1185 | ||
1186 | if (regnum == SPARC32_NPC_REGNUM || regnum == -1) | |
1187 | regcache_raw_supply (regcache, SPARC32_NPC_REGNUM, | |
1188 | regs + gregset->r_npc_offset + 4); | |
8b39fe56 | 1189 | |
386c036b | 1190 | if (regnum == SPARC32_Y_REGNUM || regnum == -1) |
8b39fe56 | 1191 | { |
386c036b MK |
1192 | int offset = gregset->r_y_offset + 8 - gregset->r_y_size; |
1193 | regcache_raw_supply (regcache, SPARC32_Y_REGNUM, regs + offset); | |
8b39fe56 MK |
1194 | } |
1195 | } | |
1196 | else | |
1197 | { | |
386c036b MK |
1198 | if (regnum == SPARC64_STATE_REGNUM || regnum == -1) |
1199 | regcache_raw_supply (regcache, SPARC64_STATE_REGNUM, | |
1200 | regs + gregset->r_tstate_offset); | |
8b39fe56 | 1201 | |
386c036b MK |
1202 | if (regnum == SPARC64_PC_REGNUM || regnum == -1) |
1203 | regcache_raw_supply (regcache, SPARC64_PC_REGNUM, | |
1204 | regs + gregset->r_pc_offset); | |
1205 | ||
1206 | if (regnum == SPARC64_NPC_REGNUM || regnum == -1) | |
1207 | regcache_raw_supply (regcache, SPARC64_NPC_REGNUM, | |
1208 | regs + gregset->r_npc_offset); | |
1209 | ||
1210 | if (regnum == SPARC64_Y_REGNUM || regnum == -1) | |
3567a8ea | 1211 | { |
386c036b MK |
1212 | char buf[8]; |
1213 | ||
1214 | memset (buf, 0, 8); | |
1215 | memcpy (buf + 8 - gregset->r_y_size, | |
1216 | regs + gregset->r_y_offset, gregset->r_y_size); | |
1217 | regcache_raw_supply (regcache, SPARC64_Y_REGNUM, buf); | |
3567a8ea | 1218 | } |
8b39fe56 | 1219 | |
386c036b MK |
1220 | if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1) |
1221 | && gregset->r_fprs_offset != -1) | |
1222 | regcache_raw_supply (regcache, SPARC64_FPRS_REGNUM, | |
1223 | regs + gregset->r_fprs_offset); | |
1224 | } | |
1225 | ||
1226 | if (regnum == SPARC_G0_REGNUM || regnum == -1) | |
1227 | regcache_raw_supply (regcache, SPARC_G0_REGNUM, NULL); | |
1228 | ||
1229 | if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) | |
1230 | { | |
1231 | int offset = gregset->r_g1_offset; | |
1232 | ||
1233 | if (sparc32) | |
1234 | offset += 4; | |
1235 | ||
1236 | for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++) | |
8b39fe56 | 1237 | { |
3567a8ea | 1238 | if (regnum == i || regnum == -1) |
386c036b MK |
1239 | regcache_raw_supply (regcache, i, regs + offset); |
1240 | offset += 8; | |
1241 | } | |
1242 | } | |
1243 | ||
1244 | if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) | |
1245 | { | |
1246 | /* Not all of the register set variants include Locals and | |
1247 | Inputs. For those that don't, we read them off the stack. */ | |
1248 | if (gregset->r_l0_offset == -1) | |
1249 | { | |
1250 | ULONGEST sp; | |
1251 | ||
1252 | regcache_cooked_read_unsigned (regcache, SPARC_SP_REGNUM, &sp); | |
1253 | sparc_supply_rwindow (regcache, sp, regnum); | |
1254 | } | |
1255 | else | |
1256 | { | |
1257 | int offset = gregset->r_l0_offset; | |
1258 | ||
1259 | if (sparc32) | |
1260 | offset += 4; | |
1261 | ||
1262 | for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) | |
3567a8ea | 1263 | { |
386c036b MK |
1264 | if (regnum == i || regnum == -1) |
1265 | regcache_raw_supply (regcache, i, regs + offset); | |
1266 | offset += 8; | |
3567a8ea | 1267 | } |
8b39fe56 MK |
1268 | } |
1269 | } | |
1270 | } | |
1271 | ||
1272 | void | |
386c036b MK |
1273 | sparc64_collect_gregset (const struct sparc_gregset *gregset, |
1274 | const struct regcache *regcache, | |
1275 | int regnum, void *gregs) | |
8b39fe56 | 1276 | { |
386c036b MK |
1277 | int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); |
1278 | char *regs = gregs; | |
3567a8ea MK |
1279 | int i; |
1280 | ||
386c036b | 1281 | if (sparc32) |
8b39fe56 | 1282 | { |
386c036b MK |
1283 | if (regnum == SPARC32_PSR_REGNUM || regnum == -1) |
1284 | { | |
1285 | int offset = gregset->r_tstate_offset; | |
1286 | ULONGEST tstate, psr; | |
1287 | char buf[8]; | |
1288 | ||
1289 | tstate = extract_unsigned_integer (regs + offset, 8); | |
1290 | regcache_raw_collect (regcache, SPARC32_PSR_REGNUM, buf); | |
1291 | psr = extract_unsigned_integer (buf, 4); | |
1292 | tstate |= (psr & PSR_ICC) << 12; | |
1293 | if ((psr & (PSR_VERS | PSR_IMPL)) == PSR_V8PLUS) | |
1294 | tstate |= (psr & PSR_XCC) << 20; | |
1295 | store_unsigned_integer (buf, 8, tstate); | |
1296 | memcpy (regs + offset, buf, 8); | |
1297 | } | |
8b39fe56 | 1298 | |
386c036b MK |
1299 | if (regnum == SPARC32_PC_REGNUM || regnum == -1) |
1300 | regcache_raw_collect (regcache, SPARC32_PC_REGNUM, | |
1301 | regs + gregset->r_pc_offset + 4); | |
1302 | ||
1303 | if (regnum == SPARC32_NPC_REGNUM || regnum == -1) | |
1304 | regcache_raw_collect (regcache, SPARC32_NPC_REGNUM, | |
1305 | regs + gregset->r_npc_offset + 4); | |
1306 | ||
1307 | if (regnum == SPARC32_Y_REGNUM || regnum == -1) | |
8b39fe56 | 1308 | { |
386c036b MK |
1309 | int offset = gregset->r_y_offset + 8 - gregset->r_y_size; |
1310 | regcache_raw_collect (regcache, SPARC32_Y_REGNUM, regs + offset); | |
8b39fe56 MK |
1311 | } |
1312 | } | |
1313 | else | |
1314 | { | |
386c036b MK |
1315 | if (regnum == SPARC64_STATE_REGNUM || regnum == -1) |
1316 | regcache_raw_collect (regcache, SPARC64_STATE_REGNUM, | |
1317 | regs + gregset->r_tstate_offset); | |
1318 | ||
1319 | if (regnum == SPARC64_PC_REGNUM || regnum == -1) | |
1320 | regcache_raw_collect (regcache, SPARC64_PC_REGNUM, | |
1321 | regs + gregset->r_pc_offset); | |
3567a8ea | 1322 | |
386c036b MK |
1323 | if (regnum == SPARC64_NPC_REGNUM || regnum == -1) |
1324 | regcache_raw_collect (regcache, SPARC64_NPC_REGNUM, | |
1325 | regs + gregset->r_npc_offset); | |
3567a8ea | 1326 | |
386c036b | 1327 | if (regnum == SPARC64_Y_REGNUM || regnum == -1) |
3567a8ea | 1328 | { |
386c036b MK |
1329 | char buf[8]; |
1330 | ||
1331 | regcache_raw_collect (regcache, SPARC64_Y_REGNUM, buf); | |
1332 | memcpy (regs + gregset->r_y_offset, | |
1333 | buf + 8 - gregset->r_y_size, gregset->r_y_size); | |
1334 | } | |
1335 | ||
1336 | if ((regnum == SPARC64_FPRS_REGNUM || regnum == -1) | |
1337 | && gregset->r_fprs_offset != -1) | |
1338 | regcache_raw_collect (regcache, SPARC64_FPRS_REGNUM, | |
1339 | regs + gregset->r_fprs_offset); | |
1340 | ||
1341 | } | |
1342 | ||
1343 | if ((regnum >= SPARC_G1_REGNUM && regnum <= SPARC_O7_REGNUM) || regnum == -1) | |
1344 | { | |
1345 | int offset = gregset->r_g1_offset; | |
1346 | ||
1347 | if (sparc32) | |
1348 | offset += 4; | |
1349 | ||
1350 | /* %g0 is always zero. */ | |
1351 | for (i = SPARC_G1_REGNUM; i <= SPARC_O7_REGNUM; i++) | |
1352 | { | |
1353 | if (regnum == i || regnum == -1) | |
1354 | regcache_raw_collect (regcache, i, regs + offset); | |
1355 | offset += 8; | |
1356 | } | |
1357 | } | |
1358 | ||
1359 | if ((regnum >= SPARC_L0_REGNUM && regnum <= SPARC_I7_REGNUM) || regnum == -1) | |
1360 | { | |
1361 | /* Not all of the register set variants include Locals and | |
1362 | Inputs. For those that don't, we read them off the stack. */ | |
1363 | if (gregset->r_l0_offset != -1) | |
1364 | { | |
1365 | int offset = gregset->r_l0_offset; | |
1366 | ||
1367 | if (sparc32) | |
1368 | offset += 4; | |
1369 | ||
1370 | for (i = SPARC_L0_REGNUM; i <= SPARC_I7_REGNUM; i++) | |
3567a8ea | 1371 | { |
386c036b MK |
1372 | if (regnum == i || regnum == -1) |
1373 | regcache_raw_collect (regcache, i, regs + offset); | |
1374 | offset += 8; | |
3567a8ea MK |
1375 | } |
1376 | } | |
8b39fe56 MK |
1377 | } |
1378 | } | |
8b39fe56 | 1379 | |
386c036b MK |
1380 | void |
1381 | sparc64_supply_fpregset (struct regcache *regcache, | |
1382 | int regnum, const void *fpregs) | |
1383 | { | |
1384 | int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); | |
1385 | const char *regs = fpregs; | |
1386 | int i; | |
1387 | ||
1388 | for (i = 0; i < 32; i++) | |
1389 | { | |
1390 | if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) | |
1391 | regcache_raw_supply (regcache, SPARC_F0_REGNUM + i, regs + (i * 4)); | |
1392 | } | |
1393 | ||
1394 | if (sparc32) | |
1395 | { | |
1396 | if (regnum == SPARC32_FSR_REGNUM || regnum == -1) | |
1397 | regcache_raw_supply (regcache, SPARC32_FSR_REGNUM, | |
1398 | regs + (32 * 4) + (16 * 8) + 4); | |
1399 | } | |
1400 | else | |
1401 | { | |
1402 | for (i = 0; i < 16; i++) | |
1403 | { | |
1404 | if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) | |
1405 | regcache_raw_supply (regcache, SPARC64_F32_REGNUM + i, | |
1406 | regs + (32 * 4) + (i * 8)); | |
1407 | } | |
1408 | ||
1409 | if (regnum == SPARC64_FSR_REGNUM || regnum == -1) | |
1410 | regcache_raw_supply (regcache, SPARC64_FSR_REGNUM, | |
1411 | regs + (32 * 4) + (16 * 8)); | |
1412 | } | |
1413 | } | |
8b39fe56 MK |
1414 | |
1415 | void | |
386c036b MK |
1416 | sparc64_collect_fpregset (const struct regcache *regcache, |
1417 | int regnum, void *fpregs) | |
8b39fe56 | 1418 | { |
386c036b MK |
1419 | int sparc32 = (gdbarch_ptr_bit (current_gdbarch) == 32); |
1420 | char *regs = fpregs; | |
1421 | int i; | |
1422 | ||
1423 | for (i = 0; i < 32; i++) | |
1424 | { | |
1425 | if (regnum == (SPARC_F0_REGNUM + i) || regnum == -1) | |
1426 | regcache_raw_collect (regcache, SPARC_F0_REGNUM + i, regs + (i * 4)); | |
1427 | } | |
1428 | ||
1429 | if (sparc32) | |
1430 | { | |
1431 | if (regnum == SPARC32_FSR_REGNUM || regnum == -1) | |
1432 | regcache_raw_collect (regcache, SPARC32_FSR_REGNUM, | |
1433 | regs + (32 * 4) + (16 * 8) + 4); | |
1434 | } | |
1435 | else | |
1436 | { | |
1437 | for (i = 0; i < 16; i++) | |
1438 | { | |
1439 | if (regnum == (SPARC64_F32_REGNUM + i) || regnum == -1) | |
1440 | regcache_raw_collect (regcache, SPARC64_F32_REGNUM + i, | |
1441 | regs + (32 * 4) + (i * 8)); | |
1442 | } | |
1443 | ||
1444 | if (regnum == SPARC64_FSR_REGNUM || regnum == -1) | |
1445 | regcache_raw_collect (regcache, SPARC64_FSR_REGNUM, | |
1446 | regs + (32 * 4) + (16 * 8)); | |
1447 | } | |
8b39fe56 | 1448 | } |